Clam: Welfare Science in Bivalve Aquaculture

Key Welfare Facts

Clams are bivalve molluscs farmed extensively in coastal intertidal and subtidal settings across Europe and Asia.
Sentience evidence for bivalves including clams is limited and contested within the current scientific literature.
Despite limited sentience evidence, precautionary welfare consideration is increasingly argued in the scientific community.
Desiccation stress during aerial exposure at low tide represents the primary physiological welfare challenge in farming.
Live transport and sale is standard practice, with killing typically by cooking without prior intervention.
Bivalve farming has very low environmental impact compared to most other animal food production systems.

Welfare Assessment

Clam welfare science is in early stages but the precautionary principle supports minimising unnecessary stress during farming and transport. Choosing farmed over wild-harvested clams for sustainability reasons is well-supported regardless of sentience conclusions.

What You Can Do

Apply precautionary welfare consideration during handling and processing of farmed clams
Support research into bivalve sentience and nociception to inform future welfare guidance
Choose farmed over wild-harvested shellfish for sustainability and traceability
Engage with aquaculture certification bodies to incorporate bivalve welfare considerations